campbell



2 Sheets-Sheet 1.

A J. CAMP BELL & A. J. BRAM MA. APPARATUS FOR AGTUATING DABBING BRUSHESFOB. GOMBING MACHINES.

(No Model.)

No. 475,034. Patented May 17, 1892.

UNITED STATES PATENT OFFICE.

JOHN CAMPBELL AND ARTHUR J. BRAMMA, OF BRADFORD,ENGLAND.

APPARATUS FOR ACTUATING DABBlNG-BRUSHES FOR COMBING-MACHINES.

$PECIFIGATION forming part of Letters Patent No. 475,034, dated May 17,1892. Application filed February 3, 1892. Serial No. 420,178. (Nomodel.)

T0 at whom it may concern.-

Be it known that we, JOHN CAMPBELL and ARTHUR JAMES BRAMMA. subjects ofthe Queen of Great Britain and Ireland, residing at Bradford, in thecounty of York, England, have invented certain Improvements in Apparatusfor Actuating Dabbing-Brushes for Combing-Machines, of which thefollowing is a specification.

This invention relates to certain improve ments in the apparatusdescribed in the specification of United States Patent No. 842,701, andhas for its object the construction of the dabbing mechanism in such amanner that the circumference of the operating eccentric is kept rounderthan is the case when acting direct upon the projections of theoscillatory plate as hitherto and by our addition to increase thedurability of the apparatus by obtaining a larger wearing-surfacebetween the projections of the oscillatory plate and operating device.0n working dabbing motions with the eccentric running in direct contactwith the projections of the oscillatory plate, as described in thebefore-named specification, the eccentric is worn flat on thecircumference at the extreme throw or greatest distance from the centerof the shaft and at two places on the circumference a short distancefrom each other and nearly opposite to the fiat place at the extremethrow, thus making it impossible for the eccentric to fill in everyposition. of the circumference the space between the projection of theoscillatory plate and for the apparatus to run silently.

In describing our invention in detail reference is made to theaccompanying, drawings, in which Figure 1 represents an elevation,partly in section, of a dabbing apparatus made according to ourinvention; Fig. 2, a detail eleva-- tion of the oscillatory plate; Fig.3, a side view of the same, partly in section; Fig. 4, a front view ofthe additional sliding block, and Fig. 5 an elevation of the shaft andeccentric with the block in section.

Motion is communicated to the apparatus by the pulley A, secured onshaft G, which is prepared with conical bearings tapering in oppositedirections and mounted in adjustited bearing-surface.

able bushes 'u, regulated by screws K. The circumference of theeccentric-L is conical, and instead of the same fitting directly betweenthe incline-faced projections M and M of movable plate M a block N isintroduced, bored conical to fit the eccentric, and tapering at theedges to fit between the inclined surfaces of projections M and M, bywhich means the whole circumference of the eccentric is utilized inoperating the'movable plate M ,.and by the taper edges of the block Nfitting the taper of the projections M and M an increased area ofwearing-surface is obtained, thereby preventing holes being Worn in thebefore-named projections and flats on the eccentric by the latter actingupon a lim- By the regulation of the bushes '0 the eccentric L can beadjusted to work freely in the block N. Thus by increasing theWearing-surface of the eccentric in the manner described thecircumference of the eccentric L is kept rounded and the projections arenot worn into holes, thereby preventing the knocking between eccentricand projections, as is now the case when constructed in the manner ashitherto, thus insuring silent running and increasing the durability ofthe apparatus.

WVhat we claim is 1. In a dabbing apparatus, the combination, with theconical eccentric and the oscillatory plate adapted to be operatedthereby, of a block surrounding said eccentric and se cured in saidplate, substantially as set forth.

2. In adabbing apparatus, the combination, with an eccentric having aconical circumference and a block provided with aconical hole adapted tofit the circumference of said eccentric, of shaft G, having conicalbearings, and the plate. M having projections M and M, between which theedges of the block fit, substantially as set forth.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing Witnesses. v

J. CAMPBELL. A; J. BRAMMA. Witnesses:

JNo. GILL, RD. B. NIOHOLLS.

